A critical evaluation of potential routes of solar hydrogen production for sustainable development

Razi, Faran; Dinçer, İbrahim

doi:10.1016/j.jclepro.2020.121582

Cited by 97 publications

(21 citation statements)

References 25 publications

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“…Among them, solar thermochemical technology to convert solar energy into fuel has the advantages of high energy density, long storage time, and easy transportation (Tang et al, 2022). As an equally clean and high calorific fuel, hydrogen is one of the most desirable energy carriers for future energy systems (Abdalla et al, 2018;Razi and Dincer, 2020). The conversion of solar energy to hydrogen fuel for storing solar energy and hydrogen production can combine the advantages of solar and hydrogen energy, which has already become a focus for scientific research and engineering development (Hosseini and Wahid, 2020).…”

Section: Introductionmentioning

confidence: 99%

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

et al. 2022

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In this work, an inverse design method that couples the multi-physics model for a solar trough thermochemical reactor (SPTR) and shape optimization model is proposed to find out optimal solar flux distribution for maximizing overall reactor performance. The gradient-based segmentation method is applied to convert the continuous solar flux into step-like flux to guide the concentrator system design. Performance comparisons among uniform flux, linear decreasing flux, and the optimized non-linear flux are also conducted to discuss the reliability of SPTR performance improvement. The results show that the optimized non-linear solar flux can improve the methanol conversion, solar thermochemical conversion, and hydrogen yield of SPTR by 2.5, 3.3, and 2.4%, respectively, compared with the uniform flux. This is attributed to the fact that the optimized non-uniform flux distribution enhances the synergy between temperature and reaction fields, and achieves a better match between spatial solar flux supply and local energy demand by reactions. Also, it is shown that the optimized step-like flux, achieved by regressing the optimized non-linear flux, can perfectly maintain SPTR performance and is effective in boosting SPTR performance under different operating conditions.

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Section: Introductionmentioning

confidence: 99%

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

et al. 2022

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“…However, industrial methods that are currently used in hydrogen production continue to rely on fossil fuels, which exacerbates the problems of resource depletion and high carbon emissions 3,4 . Encouragingly, new energy power generation technologies and water electrolysis for the hydrogen evolution reaction (HER) can provide a green and sustainable method to produce hydrogen 5‐7 . However, the cost of hydrogen production using water electrolysis from renewable energy is much higher than that using fossil fuels 3,8 .…”

Section: Introductionmentioning

confidence: 99%

One‐step synthesis of anionic S‐substitution toward Ni ₂ P (S) nanowires on nickel foam for enhanced hydrogen evolution reaction

Zhang

et al. 2021

Int J Energy Res

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Summary Hydrogen is considered a promising solution for energy, but the methods that are currently used in hydrogen production continue to rely on fossil fuels. Water electrolysis, a green and sustainable method for hydrogen production, is limited by the lack of nonprecious metal electrocatalysts that exhibit high performance. In this study, novel S‐substituted Ni2P nanowires with large aspect ratios were successfully grown on nickel foam (Ni2P(S)/NF) using a facile one‐step phosphating‐sulfuration heat treatment process. The as‐prepared Ni2P(S)/NF exhibited enhanced activity in the hydrogen evolution reaction (HER) performed both in alkaline and acidic media. It only required overpotentials of 171 and 208 mV to drive current densities of 100 mA cm−2 in 1.0 M KOH solution and 0.5 M H2SO4, respectively. The characterization studies and density functional theory calculations suggested that the enhanced catalytic activity can be ascribed to the in situ growth of nanowires on nickel foam, the 1D nanowires morphology with high length‐to‐diameter ratio, appropriate free energy of hydrogen adsorption, and enhanced H2O binding activity. This work will provide inspiration for the development of non‐precious metal HER catalysts.

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“…We need an alternative, renewable, sustainable, and clean energy sources such as hydrogen energy which is abundantly available and produces no emission during consumption 1,2 . Indeed, hydrogen has been considered to be one of the promising energy source alternate to traditional fossil fuels in future for sustainable energy storage and conversion 3‐5 . We have many alternative hydrogen production methods such as thermochemical processes (ie, steam methane reforming, coal gasification, biomass gasification, etc.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Indeed, hydrogen has been considered to be one of the promising energy source alternate to traditional fossil fuels in future for sustainable energy storage and conversion. [3][4][5] We have many alternative hydrogen production methods such as thermochemical processes (ie, steam methane reforming, coal gasification, biomass gasification, etc. ), direct solar water splitting processes, biological processes (from bacteria and microalgae), alkaline water electrolysis, and so on.…”

Section: Introductionmentioning

confidence: 99%

Experimental and theoretical study on hydrogen production by using Ag nanoparticle‐decorated graphite/Ni cathode

et al. 2020

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Summary In this study, graphite (G) electrode was coated with nickel and decorated with silver nanoparticles (G/Ni/Ag) with the help of galvanostatic method, and electrodes were used as a cathode in alkaline water electrolysis system. The characterization was achieved using X‐ray diffraction and field emission scanning electron microscopy. Hydrogen evolution performance of electrodes was investigated via cyclic voltammetry, chronoamperometry, cathodic polarization curves, and electrochemical impedance measurements. Electrochemical results showed that hydrogen production efficiency significantly increased and charge transfer resistance decreased via G/Ni/Ag. The electrochemical water splitting performance of G/Ni/Ag, was established in a joint experimental and computational effort. Water and proton adsorption on Ag‐decorated Ni surface were investigated using density functional theory. Electronic structure calculations identified the role of Ag adatom and Ni surface on water and proton adsorptions. From the computational studies, O in water was more reliable to adsorb at the bridge position of the Ag and Ni atoms, leading improved orbital overlap between H and Ni atoms and maximized chemical and physical interactions between the H2O molecules. Therefore, the Ag‐decorated Ni(111) surface provides preferable adsorption site for the O atom in water and direct interactions between water Hs and available surface Ni atoms promote water dissociation.

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A critical evaluation of potential routes of solar hydrogen production for sustainable development

Cited by 97 publications

References 25 publications

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

One‐step synthesis of anionic S‐substitution toward Ni ₂ P (S) nanowires on nickel foam for enhanced hydrogen evolution reaction

Experimental and theoretical study on hydrogen production by using Ag nanoparticle‐decorated graphite/Ni cathode

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A critical evaluation of potential routes of solar hydrogen production for sustainable development

Cited by 97 publications

References 25 publications

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

Inverse Design of Local Solar Flux Distribution for a Solar Methanol Reforming Reactor Based on Shape Optimization

One‐step synthesis of anionic S‐substitution toward Ni 2 P (S) nanowires on nickel foam for enhanced hydrogen evolution reaction

Experimental and theoretical study on hydrogen production by using Ag nanoparticle‐decorated graphite/Ni cathode

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One‐step synthesis of anionic S‐substitution toward Ni ₂ P (S) nanowires on nickel foam for enhanced hydrogen evolution reaction